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There are 20 twelve-letter words containing A, C, E, H, L, M, O and Y

ACHLAMYDEOUSachlamydeous adj. (Botany) having no perianth.
ACHLAMYDEOUS adj. without a perianth.
CEPHALOMETRYcephalometry n. The measurement of the head, especially in order to study growth, development, and disease.
CEPHALOMETRY n. the science of measuring the head in living individuals.
CHLORENCHYMAchlorenchyma n. (Botany) A mechanical, supportive ground tissue in plants containing chloroplasts.
CHLORENCHYMA n. plant stem tissue containing chlorophyll.
COLLENCHYMAScollenchymas n. Plural of collenchyma.
COLLENCHYMA n. the supportive tissue of plants.
CYTOCHEMICALcytochemical adj. (Biochemistry) Relating to cytochemistry.
cytochemical n. (Biochemistry) Any chemical compound that is found only in cells.
CYTOCHEMICAL adj. relating to cytochemistry.
HAEMATOCRYALhaematocryal adj. (Zoology) cold-blooded.
HAEMATOCRYAL adj. of all animals except birds and mammals, having a body temperature that varies with the temperature of the surroundings, also HEMATOCRYAL.
HAEMATOXYLICHAEMATOXYLIC adj. of or like haematoxylin.
HOMEOTYPICALhomeotypical adj. (Biology) Of or resembling the usual type.
HOMEOTYPICAL adj. denoting or relating to the second nuclear division of meiosis, which resembles mitosis, also HOMOEOTYPICAL.
HYPOCALCEMIAhypocalcemia n. (Biology, medicine) The condition of having an abnormally low concentration of calcium ions in the blood.
HYPOCALCEMIA n. a deficiency of calcium in the blood, also HYPOCALCAEMIA.
HYPOCALCEMIChypocalcemic adj. Relating to, or exhibiting, hypocalcemia.
HYPOCALCEMIC adj. relating to hypocalcemia, also HYPOCALCAEMIC.
HYPOGLYCEMIAhypoglycemia n. (Pathology) A too low level of blood glucose.
HYPOGLYCEMIA n. abnormal decrease of sugar in the blood, also HYPOGLYCAEMIA.
HYPOVOLAEMIChypovolaemic adj. Alternative form of hypovolemic.
LACHRYMOSELYlachrymosely adv. In a lachrymose manner.
LACHRYMOSE adv. shedding tears.
MACROCEPHALYmacrocephaly n. (Medicine) A condition in which the head is abnormally large.
macrocephaly n. (Geography) The excessive concentration of population and development in a single centre, to the detriment…
MACROCEPHALY n. largeness, or abnormal largeness, of the head.
MELANCHOLILYmelancholily adv. In a melancholy manner.
MELANCHOLY adv. sad, gloomy.
METHODICALLYmethodically adv. In a methodical manner; with order.
METHODICAL adv. arranged, characterized by, or performed with method or order, also METHODIC.
MICROCEPHALYmicrocephaly n. A neurological disorder in which the person affected has an abnormally small head due to a failure of brain growth.
MICROCEPHALY n. the state of having a small head.
PHONEMICALLYphonemically adv. By means of, or in terms, of phonemes.
PHONEMIC adv. relating to a phoneme.
POLYCYTHEMIApolycythemia n. (Pathology) A rare disorder in which the bone marrow produces an abnormally large amount of blood cells…
POLYCYTHEMIA n. a condition marked by an abnormal increase in the number of circulating red blood cells, also POLYCYTHAEMIA.
PYROCHEMICALpyrochemical adj. (Chemistry) Of, related to, or produced by chemical reactions at elevated temperatures.
PYROCHEMICAL adj. relating to chemical changes at high temperatures.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 81 words
  • Scrabble in French: 2 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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